Bit rates 128 to 320

OK, I wanted higher quality misic in my car. After changing my import settings to 320kbs I wanted to up grade my 128 files to 320 files. If you go to Advanced and then create aac version it will automaticly convert any high lited file. My question is am I really getting a 320kbs file from a 128kbs file or do I have to reimport the cd? Does anybody really know?

You will need to import the cd all over again. iTunes will convert it to 320 but when compared to songs that are imported in 320 there will be a big difference.

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320 & 128 bit rate in iPhone.

I haven't found an option that lets you choose the bit rate you want to convert your music to in my iPhone. All my music is 320 bit rate or lossless... So it's going to take a chunk of space. I'm converting the music I want on my iPhone to a 128 bit rate and throwing that in a playlist to sync to my phone... which I really don't want to do because now I have the same albums twice and it's makes my library messy. Any quick fix or solutions?

I can't speak for iPods cause I never bought one. I've always been the kind of person who rather have one device (Moto Razr V3i w/ iTunes) then two devices (reg. phone and an iPod). My phone would covert the music to 128 bit rate to optimize space. It would make sense that apple would give us an option to convert the size of our music files to optimize space as well. This making duplicate albums in two different bit rates is a hassle! Unless you've gone into Edit > Preferences > Advanced > Importing... the music you rip on your computer is going to be a defult ACC 128 bit rate format. Which there is nothing wrong with. If you share music with friends and they don't have iTunes there's going to be an issue. So I changed my encoder to MP3 and also adjusted the audio quality. You tend to lose lower frequencies when music is ripped at a low bit rate.

Transferring CDs at 320 bit rate

I'm transferring several CDs to iTunes (7.5). For a few of the classical ones, I've set iTunes for AAC and custom (320 kbps and 48 kHz) and Variable Bit Rate unchecked. I presumed this would produce the highest quality (?). After transferring, most of the songs are listed at less than 320 (i.e. 311, 309, 298, etc).
1. Why is this?
2. Should I be using different settings?
Thanks for any suggestions. HNick

I think you will find that at certain bit rates with the AAC encoder, the variable setting is a default setting and cannot be changed.
To see what I mean, go to your import preferences and select the 320kbps setting.
Now put a check mark in the variable box and the kbps setting will immediately change to 128.
Now try to select 320kbps from that list and you will see it's 'greyed out' and cannot be selected.
It's one of the reasons I am still using the mp3 encoder.

Changing bit rate from 128 to 192

I'm getting shure e4 headphones and want to experience the full potential of its sound, so i want to change the bit rate from standard 128 to 192. Can anyone give me directions on how to do this? also can you adjust bit rate to higher than 192?

You don't say which file format you are using but regardless, this is how to change your Import settings. Open iTunes go to iTunes>Preferences>Advanced>Importing. Once there, from the "Import Using" menu pick the encoder you want to use and below that from "Setting" choose "Custom" and in the box that appears choose the bit rate you want. Both MP3 and AAC formats will let you choose up to a bit rate of 320 kbps

Won't import at 320 bit rate?

HI
I'm running the latest ITunes software on windows xp home and want to import audio cd's at 320 bit rate. I select this option in the custom settings and it appears to stick, but when I check the song's after importing has finished they have imported at 128 bit rate.
I've tried deleting the 2 itunes.pref files as stated else where but no luck..
Can somme one pleeease help me?

Hi Guys
Thanks for the info, I gave it a go and changed the screen resolution and the weird thing is that I could already see the apply buttton on the original screen resolution BUT when I changed the resolution it worked!!
I don't see the logic in how window's screen resolution effects the importing bit rate of Itunes?
I suppose that's what you get when yoou throw apples at windows, Broken glass!
Thanks for the help

Issue with playing 320 k bit rate files on iOS 5

I was able to successfully update my iPhone 4 with the iOS 5 however to my (unpleasant) surprise I realized that all the music files of 320 K Bit rate that I had could not be played with this new OS. All other music files (of 128 K bits rate) was able to play normally.
When I attempt to play the higher bit rate ones, it doesn't give any warning or crashes. The Play symbol at the bottom changes to "Pause" indicating it's playing and when clicked again it changes to "Play" indicating it's paused. But the time slider stays at 0:00
It may be noted that the high bit rate files plays normally on the latest iTunes software on my PC running windows 7.
I haven't yet tried to remove all the paylists first and then add them back when syncing it next time. That might solve this problem but I am not sure. Even if it does, this is a major defect with iOS 5 that has gone un-tested. with the previous version, I had no problems playing the same high bit rate music files.

After I faced the above problem, I did the following:
1. Sync the iphone after unchecking the playlist having the 320 K Bit rate music files. As expected the playlist was removed from the iPhone.
2. Checked the playlist and then re-sync the iphone. This time when the music files were copied to the phone, all the files having a bit rate higher than 128 K were automatically converted to 128 K Bits.
The above process made these high bit rate files convert down to 128 K bits and playable on the iOS 5.
The question is why is iOS 5 not able to play the bit rate higher than 128 K Bits while the older version could? Does playing the high bit rate files offer any better sound quality on iPhone?
I have played the high bit rate on my car's audio system (Harmon Kardon premium speakers) and it definitely sounds better than it's 128 K bit equivalent.

Uncompressing 128 bit rate

Is it possible to uncompress 128 bit rate to something like 160 or higher? I see the option of switching imported songs to higher quality under preferences. when I switch then convert the song in iTunes I see a change in the memory of the song, but is it really changing the quality of sound. If this works then what is the point of DRM free music having 256 quality if you can upconvert, if this is possible.

if you are throwing out the cd and want to keep your songs close to cd quality.
Don't throw out your CDs! They are the best quality version of the song, and they are not subject to loss in hard drive crashes. If you are really tight on storage space, toss the plastic jewel cases and save only the discs.
by the way what is cd rate?
Technically it is 1411 kb/s, although because of the different coding scheme, that number can't really be compared to the bit rate of a compressed format like AAC or mp3. It would be "reasonably accurate" to think of CD quality as equal to a compressed format at 320.
Windows XP & 30GB iPod

HT1535 How do i convert higher bit rate songs to 128 kbps AAC

I am trying to sync selected songs to my Iphone 5 from my itunes library. I have recently taken my computer to be fixed and all of my music documents were taken off but the files were replaced shorty after. I re-downloaded itunes and it is up to date. My iphone is also on the ios 7.0.4. Whenever i plug my phone in to be synced it never goes past the "waiting for changes to be applied" step. While my phone was still connected i went to the "On this iphone" tab and clicked the autofill button and a message came up that said i must convert higher bit rate songs to 128 kbps ACC to allow the songs to be copied to my iphone. How do i do this? Also, once this is done will it solve my problem with transfeering my songs from my library to my iphone?

Sid,
With the device connected, click the Summary tab and you will see the "Convert higher bit rate..." option. Set it to 128. See picture below:

Using the "Convert higher bit rate songs to 128 kbps AAC" feature...

I recently discovered the "Convert higher bit rate songs to 128 kbps AAC" feature and used it to copy my entire 70 GB music library to my 64GB iPad. The music library now occupies only 45 GB. Awesome!!!
Unfortunately, the whole process took well over 24++ hours on my quad core Windows 7 computer (takes about 6 seconds per track). Questions:
1. Is it possible to speed up the process? Even though I am using iTunes 64-bit version, it seems that at no point is more than a single core being used at 33%. Seems to me like overall 8% of the CPU (33% / 4) capacity is being used for the conversion and 92% is being left idle. Is this just bad programming or is there anything I can do to speed up the process? Others see similar problems?
2. Now I have already started dreading the day, I need to restore my iPad (e.g., when OS version 4 becomes available). I would hate to have to do this process all over again. Should I need to restore my iPad, is there anyway I can force iTunes to back up the 128-bit AAC versions on my computer and restore it up from there?
Any insights into both these questions will be deeply appreciated.
Cheers,

ed2345 wrote:
malus_domestica wrote:
Thanks for the response.
So, I am wondering why iTunes uses only 8% of the processor power in converting the songs.
Possible reasons not to grab more of the CPU power (1) maybe the process is I/O bound due to all the writing, and is not processor limited? (2) since conversion is almost always a background program, and the user will typically have other things going on, maybe it intentionally limits CPU use?
I ran a few quick experiments (out of curiosity) and think the answer is #2. No apparent technical reason but potentially a limitation introduced by Apple's engineers to maintain a good user experience (for some people at least). I fired up 4 instances of dbpoweramp and ran multiple conversions and found that the process goes faster than what iTunes can do by an order of magnitude. With luck, someday Apple will have an option for users to select how much of processor bandwidth to be allocated for the conversion.

What does convert higher bit rates songs to 128 kbps mean

what does convert higher bit rate songs to 128 kbps mean?

pattyfromsyracuse wrote:
what does convert higher bit rate songs to 128 kbps mean?
Some people, myself included, import their music from original audio CDs. When doing so I choose to import using Apple Lossless format so as to keep the full original quality of the audio CDs (this is after all why it is called Apple Lossless format in that you are not losing any quality).
The drawback of doing this is that the music files take a lot more disk space than a lossy format like MP3 or AAC. This is these days not a problem on a computer as hard disk space is now cheap an plentiful but it can be a problem on a flash memory based music player like the iPod Shuffle, iPod Nano, iPod Touch, or iPhone as these have far less capacity.
Therefore Apple now let you turn on this option to automatically convert from Apple Lossless to AAC when syncing to one of these music players. As a result on your computer the music is still kept in the full lossless high quality format, but is converted and transferred as a much smaller but slightly lower quality for use on these music players. As with an iPod you are not listening in a quiet room with high quality speakers you will not really notice the difference in quality.

How do you convert a higher bit rate music to 128 kbps AAC?

How do convert a higher bit rate music to 128 kbps AAC?

Select "Convert higher bitrate songs to 128 kbps AAC" - http://forums.macrumors.com/showthread.php?t=303772 - discussion from 2007

Music Skips Some Songs After Choosing "Convert higher bit rate songs to 128 kbps" Option

I have so much music and choosing "convert to 128 Kbps" option makes it from 18 Gb to around 6 gbs but sometimes a few songs are ther

Meg St._Clair wrote:
"Convert" tends to be a confusing term. What iTunes does is make another copy of the track at the lower bit rate for transfer to the Shuffle. Your original, higher bitrate file remains untouched.
Actually, iTunes converts the track on-the-fly while loading it on the shuffle. NO copy of the downconverted track is kept. The same process will occur IF you decide to delete the track from the shuffle and then happen to want to put it on the shuffle again.

I am tying to add music from a disk i imported but it says "convert higher bit rate songs to 128 kbps AAC"? How do i do this?

How do i convert the bit rate to 128 kbps? Having difficulty figuring that out

Add to what? An iOS device (of which you make no mention)?
https://discussions.apple.com/message/18341150 (picture for iPad)

Sync at Higher than 128 bit rate to iphone?

Does anyone know why apple does not give an option to sync songs at a bit rate other than 128 kbps (or the bit rate in itunes)? Some of us would buy iphones with more memory if we could sync at 256.

sguerra wrote:
Chris,
Thanks for the reply. What would happen if I burn an album from 128 to wav file so i could listen to it on any cd player, then imported it back as 256? Still no quality change? This is why I ask, I accedentally deleted my whole library, fortunetly I had most of it backed up on DVDs. I thought this could be a good opportunity for me to evolve to 256.
Is the concept, if I bought an album from itunes at 128, that is best quality it will ever be? The same album bought at "sears", imported at 256 would be better quality? That makes sense.
Thats exact thing that will happen. Lossy formats (like MP3 or AAC) cannot be improved in any way from their current encoding rate. You already lost the information long ago and you cannot get it back no matter what you do with it.

Will itunes move up to 320 bit-rate downloads?

i am a bit of an audiofile and was wondering will itunes move up to 320 bit-rate downloads?

We are just fellow users on here - until if/when Apple announce something nobody on here will know.

Bit rates 128 to 320

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